Knitting machine



March 9,1926. 1,575,932

- N. J. PERRY KNITTING momma original led Deg. 19. 1919 grwwwfo a Napbleofi J. Pe rrg.

Patented Mar. 9, 1926, r V

UNITED STATES NAPOLEON d. PERRY, or NASHVILLE,

TENNESSEE, ASSIGNOE, T MAY HOSIERY MILLS, OF NASHVILLE, TENNESSEE, A GOBYPORATION 0F TENNESSEE.

KNITTING Macrame,

Application filed December 19, 1919, Serial No. 3 15,956- Renewed To all whom it may concern.

Be it known that I, NAroLnoN J, PERRY, a citizen of the United States, residing at Nashville, in the county of Davidson and State of Tennessee, have invented certain new and useful Improvements in Knitting Machines, of which the following isa specification. v 1

This invention relates to knitting machines, and has for an object to provide a new and improved type of dial cam head. A further object of the invention isito provide a dial cam head having cams movable and adjustable therein in improved manner, whereby the dial needles may be moved varying distances for knitting purposes, and also at predetermined intervals advanced for stripping. I

With these and other objects in view, the invention comprises eertainnovel units,com-

. binations and arrangements of parts as will be hereinafter more fully described and claimed.

Referring to the accompanying drawings, which are made a part hereof, and on which similar reference characters indicate similar parts, Figure 1 is a view of the cam head in in verted plan with the cams shown in knitting 0 position,

c Figure 2 is a view in inverted plan showing the knitting cam, moved inwardly to withdraw the needles from knitting position, Figure 3 is a view of thecam head in side elevation as indic Figures 1 and 2, and I Figure 4 is a detail view in side elevation of the wing cams as indicated at arrow 4:, Figures 1 and 2. The improved cam head, which forms the subjectmatter of this application, comprises a disk 10 rigidly connected with the tubular shaft 11, providing an opening 12, to insert a rigid shaft to support the dial beneath the dial head, permitting the dial head to rotate while the dial remains stationary. The mechanism for driving the dial head and for supporting the dial is not shown as it is well known in the art, 7

The disk 10 is provided with guide ways 13- extending entirely across the face of the disk in which are mounted to slide radially, blocks 14,- and 15. The blocks 14 and 15 are rovided with pins 16 which extend upward- 3' through slots 17 and 18, and to such dieated by arrow 3 at' May 29, 1925.

tance above the upper plane of the disk as may be necessary to attach the controlling mechanism as, for instance, such distance as indicated at Figure 3. Mechanism is provided for attaching to the pins 16 to move such pins radially and therewiththe blocks 14 and 15, as theexigencies of the knitting may make necessary, but being well vknown is not here shown. Y Y

Theblock 1a is provided with a groove 19, separating the periphery .of'such block from thecam 2O earriedthereby. Preferably the peripheral rib or guard cam and the cam 20 will be integral, the groove 19 simply being cut in the facefof the block.. The peripheral-rib is also cut down M21 and a curvilinear, cam member 22 hinged thereto as at 23. The cam member 22 is substantially S-shaped with the 'end'opposite the pivot 23 slidable in the groove 24: cut in the cheek of the disk 10, the end of the cam 22. being reduced as at 25 so as not to interferewith the needle latches when projected as in Figure 2. 11

The block 15 is likewise provided with a groove 26 defining a cam member 27. The cam 27 also being carried integral with the block 15. The cam members 20 and 27, as willbe'noted, are approximately semi-circular and when ,moved apart as, forinstance to the position shown at Figure 1, define parts of an ellipse. An elliptical, cam way is desirable for actuating the dial needles, and to permit the elliptical cam to be elongated as found necessary, means. is provided for completing the ellipse. The means provided are wing cams, consisting of the members 28 and 29 upon one side, and I 30 and 31 upon the other side. The two sets of wing cams, although slightly different in shape because of the requirements for guiding the needles, are sufliciently identical so that a description of one set of wing cams will define thev other. The'wingcains 30 and 31 are hinged together, preferably by being halved as at 32 (see Figure 34) with a pintle 33 inserted through the halved sections as a hinge. The pintle 33 engages a supporting member 34, preferably in form of a screw having a threaded portion 35, which engages aprop'erly threaded opening in the disklO; The su holds the wings from the back the ti the grantee 26, and 19,

31 properly spaced isk 1O tcpass into d to permit a sprin porting member 34,

NA cam finger or guardcam 39 is 36 to engagenpon the pins 37 and SSior eX- erting tension on the wings to hold the points in intimate contact with the cams and 27.

also preferablysecured to one of the cheeks ot' the disk 10 with a guard cam upon the opposite side, comprising the. sections 40 and 11 with a movable block 42 intermediate sections 4-0 and 41. The last mentioned cam considered in its entirety, forming a continuation with the movable cam 2-2, corresponds to the cam member 39 except that one section 22 of the cam is made movable. v

The movable section 42 is attached to a pin 43, which extends upwardly through the disk 10 and is pivoted to a lever 4L4: 'fulcrumed at 45 with a spring 46 tending to normally hold the section 42in position to complete the cam. By depressing the "leverae the section d2 is raised into; the disk "10, opening a passage for the withdrawal of oneof the ldial needles for replacing such dial needles as occasion may require. As shown at Figures 1 and 2 a flight of small arrows indlcates the adiustable cam groove to receive and actuate the shanksot the dial v needles. The direction indicated bythe arrows is the relative direction of movement of the cainneedles', it being understood of course that the camneedles do not themselves rotate, but that the cam groeve with the cams and cam heads are the rotating part, the cam head rotating in the direction indicated by the circumferential arrows producing the relative movement indicated. by, the'flight of smallarrows within the groove. It will also be understood that the icamQO and its surrounding adjacent parts is the cam ivhich actuates the dial needles for knit-ting, while the cam 27 andits surroiindingiadjacent parts is the cam which advances the dial needles for stripping.

Having thus fully described my said invention, what I claim as new and desire to secure by Letters Patent, is:

i 1. 1 dial cam mechanism comprising a dial cap, cams movable radially upon. the cap and presenting each a po'rtionof an ellipse, adjustable calm members spanning the interval between the first mentioned cams, and anexternal cam member pivotally connected with one of the" first mentioned.

cam members and movable therewith.

" 2; Adial cam mechanismcomprising a dial cap having blocks mounted jtojmove diametrically thereon and each comprising an external rib and an internal cam portion forming a part of an ellipse, springpressed members spanning the interval between and engaging the sides of the elliptical cammem- ,bers, and a cam member hinged to one of V the external ribs and movable with the block.

3; A dial cam mechanism comprising a dialhoap having blocks movablehradially relative thereto, external ar'cuate ribs formed upon the outer extremities of the blocks, internal members formed upon the blocks defining a cam groove between the cam members and *theribs, fwings pivoted between thecam members andi having their extremities bearing yieldingly upon thesides of the cam members, and a curvilinear cam member having one end pivoted to one of the external ribs and the other. end siidable in a fixed portion ofthe dial cap. 7

4. A dial cam I mechanism comprising a cap having diametrical slots formed therein,

blocks mounted to slide diametrically upon the cap pins on thebloeks extending through the slots, e2iternal ribs formed upon the outer mounted rigidly at i one slide of one of the blocks, and a curvihnearcam member hav ng a one end p voted to one of the external llbS' and the opposite end slidabljein afixed portion of the dial captat one side of one of the sliding blocks.

5. A' dial cam [mechanism comprising a dial a cap] having diametrical slots formed therein, blocks mounted uponthe face ofthe 'cap slidable diametrically relative thereto,

connecting members extending from the blocks through the slots, nner and-outer cam members carried by the V blocks forming; cam grooves conform ng substantially w th a parts of an ellipse, cam wings pivoted be tween the blocks and having their extremi ties beari ig upon the sides of the inner cam members and completing the ellipse adjustable in lengthby the movement of theblocks one of said [outer cam members having a reduced portion, and a curvilinear cam member pivoted in said reduced portion and gagement with a fixed partof the dial cap.

making sliding I connection with, a fined part 7. In a dial cap for rib, knitting machines,

a" pivoted needle retracting cam havingan opening, a radially movable'needle project ing cam and apivotfpin fitting in theopening in theneedleretracting cam and mov-fl ablewlth the needle prO ectmg cam, sub

stantially as, set} forth.

In a dial capter machines,

an elongated needle retracting cam having one end slidably connected to the cap, a pivot for said cam movable radially of the dial cap, and needle projecting and guard cams cooperating with the needle retracting cam and also movable on the dial cap, substantially as set forth.

9. In a dial cap for rib knitting machines, knitting means comprising a needle projecting cam adjustable to vary the projection of the needles to cause them to take or reject the yarn, a needle retracting cam movable With and independently of the needle projecting cam, the needle projecting cam falling off sharply at the side next to said retracting cam and the latter When in knitting position lying close to that side of the needle projecting cam, thereby providing for abrupt retraction of the needles, substantially as set forth.

10. In a dial cap for rib knitting machines having a cam path for the needlebutts, radially movable blocks, inner and outer cams thereon, fixed cams on the cam cap between said blocks, a gate-Way in one of said blocks for removal of broken needles, and a lever at the opposite side of the cap for opening the gate, substantially as set forth.

In Witness whereof, I have hereunto set my hand and seal at Washington, District of Columbia this 20th day of November, A. D. nineteen hundred and nineteen.

NAPOLEON J. PERRY. [1 s] 

